Compact model of magnetic tunnel junctions for SPICE simulation based on switching probability

Haoyan Liu, Takashi Ohsawa

Research output: Contribution to journalArticlepeer-review

Abstract

We propose a compact magnetic tunnel junction (MTJ) model for circuit simulation by de-facto standard SPICE in this paper. It is implemented by Verilog-A language which makes it easy to simulate MTJs with other standard devices. Based on the switching probability, we smoothly connect the adiabatic precessional model and the thermal activation model by using an interpolation technique based on the cubic spline method. We can predict the switching time after a current is applied. Meanwhile, we use appropriate physical models to describe other MTJ characteristics. Simulation results validate that the model is consistent with experimental data and effective for MTJ/CMOS hybrid circuit simulation.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalIEICE Transactions on Electronics
VolumeE104C
Issue number3
DOIs
Publication statusPublished - 2021 Mar 1

Keywords

  • Magnetic tunnel junctions (MTJ)
  • Modeling
  • Spin transfer torque magnetic random-access memory (STT-MRAM)
  • Verilog-A

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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